| Event name: | ES-03-008 | |
| Country: | SPAIN | |
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Nature of the harmful event: |
Seafood toxins | |
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Event directly affected: |
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| Toxicity detected: | Yes (Approximate range: DSP Positive.) | |
| Associated syndrome: | DSP | |
| Unexplained toxicity: | No | |
| Species implicated in toxin transmission (transvector): | ||
| Report the outcome of a monitoring programme: | Yes (MONITORING PROGRAMME OF THE CENTRO DE CONTROL DO MEDIO MARIÑO) | |
| Event occurred before in this location: | Yes (The DSP episodes caused by Dinohysis acuta + acuminata +caudata are a recurrent phenomenom in the Galician Rías whith more or less incidence depending on the year.) | |
| Individuals to contact: | MANEIRO, Juan , PAZOS, Yolanda , MOROÑO, Ángeles | |
| Location: | Latitude: 42.388333, Longitude: -8.761667 | |
| General location information: |
Ría Cedeira, Ría de Ares-Betanzos, Ría de Cor, Galicia, NW Spain. HAB Area code(s): ES-05 ES-06 ES-07 ES-08 |
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| Additional location information: | 43º 39.55' - 42º 08.22' N; 08º 03.59' - 09º 03.00' W. | |
| Bloom event dates (yyyy/mm/dd): |
Event Date:2003-10-20 Start: 2003-09-23, End: 2003-12-31 |
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| Quarantine levels dates (yyyy/mm/dd): | ||
| Additional date-related information: | Cells of Dinophysis species were only detected until mid-February but high concentrations of DST in bivalves were maintained until early 2004 | |
| Causative organism known: | Yes | |
| Causative Species/Genus: |
Dinophysis acuta
(5,520 cells/L)
42º 23.30' N; 08º 45.70' W (St. P9) 20/10/03 Dinophysis acuminata (1,360 cells/L) Dinophysis caudata (240 cells/L) |
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| Co-Ocurring Species/Genus: |
Ceratium furca
(19,600 cells/L)
Dinobryon spp. (19,305 cells/L) Pseudo-nitzschia spp. (17,820 cells/L) |
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| Chlorophyll concentration, if known: | 4.6 µg/L Chlª. µg/l | |
| Additional bloom information: | ||
| Event-related bibliography: | ||
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| Nutrient information: |
AMONIUM:
1.27 µg/L
NITRATE: 2.48 µg/L NITRITE: 0.93 µg/L PHOSPHATE: 0.47 µg/L |
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| Temperature Range During Event: | Max: 19 °C, Min: 10 °C | |||||||||||||||||||||||||
| Salinity Range During Event: | Max: 35, Min: 7 | |||||||||||||||||||||||||
| Bloom location in the water column: | ||||||||||||||||||||||||||
| Growth: | Advected | |||||||||||||||||||||||||
| Growth Comments | ||||||||||||||||||||||||||
| Additional Environmental information: | ||||||||||||||||||||||||||
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| Kit used: No | Type of kit used: | ||||||||||||||||
| Additional information: | The oficial detection method is by mouse bioassay: Yasumoto et al., Seafood toxins, 1984, 207-214.Some samples are analyzed by HPLC: Lee et al., Agric. Biol. Chem., 1987, 51, 877. | ||||||||||||||||
| Economic losses: | Not evaluated | ||||||||||||||||
| Management decision: | Harvesting was closed in culture areas affected. Wild mussels (Mytilus galloprovincialis) are used as bioindicator for infaunal molluscs, then when assay are possitive for this specie, infaunal molluscs are precautionary closed in that area, until samples | ||||||||||||||||
| Additional harmful effect information: | Closures due to the presence of toxicity in molluscs is usual in the area and resource exploitation strategies allows to face these closures without great problems. | ||||||||||||||||
